Question: When did Prince Harry, Duke of Sussex, date Chelsy Davy?
Paraphrase: On what date did Prince Harry, who is the Duke of Sussex, have a date with Chelsy Davy?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q152316 p:P451 ?s . ?s ps:P451 wd:Q529485 . ?s pq:P582 ?value}